From patchwork Sun Apr 28 06:30:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?QmlhbyBIdWFuZyAo6buE5b2qKQ==?= X-Patchwork-Id: 10920727 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 06F5592A for ; Sun, 28 Apr 2019 06:32:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E7B4228AA2 for ; Sun, 28 Apr 2019 06:32:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DC12928AAB; Sun, 28 Apr 2019 06:32:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 39C2C28AA2 for ; Sun, 28 Apr 2019 06:32:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=6KbGdWoi3RSv9jjUqPt0RvJXYnG9pf7cEP50QMQmScQ=; b=pBP49TDSOgcIkD tqdB2ONJaQsR/WG1pvVkhQlWa02N9Lsbx/ADn/mDriuMuzLtZHamk5iJLXhCefX7Cc98kJVD3aAsA WN9u+5hWC/cveQbh9X2Otd1DmpTh52ZBh3jjYTkM1Dgo9U+6eq80ZpeoJKO76xH8Ck/4x8sm1ldXT fot+0QuUVumYUp+UGqtuMFJPmwydpWDcUSAtBg38EUB+/TSaDVcYhl/UJbIHhpMBggeIWib/Vaf8W kvsxvLRMddHOW+NwB9YO2/22z+lL83NnWI+L0ELhUUwnsoVLBK3+pr3IwfIUFu2ebjP2KU6RzMMU7 d6eegKuGuCZVeyZ70QSw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hKdMH-0003tr-Pa; Sun, 28 Apr 2019 06:32:17 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hKdL1-0002Nv-G2; Sun, 28 Apr 2019 06:31:07 +0000 X-UUID: edf2eba5cac6474284fc43ca00189f03-20190427 X-UUID: edf2eba5cac6474284fc43ca00189f03-20190427 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 926468999; Sat, 27 Apr 2019 22:30:45 -0800 Received: from MTKMBS01N2.mediatek.inc (172.21.101.79) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sat, 27 Apr 2019 23:30:44 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs01n2.mediatek.inc (172.21.101.79) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sun, 28 Apr 2019 14:30:31 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Sun, 28 Apr 2019 14:30:30 +0800 From: Biao Huang To: Jose Abreu , Subject: [PATCH 5/6] net: stmmac: add mdio clause 45 access from mac device for dwmac4 Date: Sun, 28 Apr 2019 14:30:08 +0800 Message-ID: <1556433009-25759-6-git-send-email-biao.huang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1556433009-25759-1-git-send-email-biao.huang@mediatek.com> References: <1556433009-25759-1-git-send-email-biao.huang@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 0696C1C6D5D7CC663239AAE30B5C44FCAA58EBB9799C653FC8830C4B66831C3A2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190427_233059_877536_32FF2A66 X-CRM114-Status: GOOD ( 15.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jianguo.zhang@mediatek.com, Alexandre Torgue , biao.huang@mediatek.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, yt.shen@mediatek.com, linux-mediatek@lists.infradead.org, Maxime Coquelin , Matthias Brugger , Giuseppe Cavallaro , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP add clause 45 mdio read and write from mac device for dwmac4. Signed-off-by: Biao Huang --- drivers/net/ethernet/stmicro/stmmac/common.h | 11 +- drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 3 + drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 167 +++++++++++++++++++-- 3 files changed, 165 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index 709dcec..06573b3 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -410,12 +410,15 @@ struct mac_link { struct mii_regs { unsigned int addr; /* MII Address */ unsigned int data; /* MII Data */ - unsigned int addr_shift; /* MII address shift */ - unsigned int reg_shift; /* MII reg shift */ - unsigned int addr_mask; /* MII address mask */ - unsigned int reg_mask; /* MII reg mask */ + unsigned int addr_shift; /* PHY address shift */ + unsigned int cl45_reg_shift; /* CL45 reg address shift */ + unsigned int reg_shift; /* CL22 reg/CL45 dev shift */ + unsigned int addr_mask; /* PHY address mask */ + unsigned int cl45_reg_mask; /* CL45 reg mask */ + unsigned int reg_mask; /* CL22 reg/CL45 dev mask */ unsigned int clk_csr_shift; unsigned int clk_csr_mask; + unsigned int cl45_en; /* CL45 Enable*/ }; struct mac_device_info { diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index a60390b..b71342c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -837,6 +837,9 @@ int dwmac4_setup(struct stmmac_priv *priv) mac->mii.reg_mask = GENMASK(20, 16); mac->mii.clk_csr_shift = 8; mac->mii.clk_csr_mask = GENMASK(11, 8); + mac->mii.cl45_reg_shift = 16; + mac->mii.cl45_reg_mask = GENMASK(31, 16); + mac->mii.cl45_en = BIT(1); return 0; } diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c index bdd3515..f7f7d62 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c @@ -150,16 +150,16 @@ static int stmmac_xgmac2_mdio_write(struct mii_bus *bus, int phyaddr, } /** - * stmmac_mdio_read + * stmmac_c22_read * @bus: points to the mii_bus structure - * @phyaddr: MII addr - * @phyreg: MII reg - * Description: it reads data from the MII register from within the phy device. + * @phyaddr: clause 22 phy address + * @phyreg: clause 22 phy register + * Description: it reads data from the MII register follow clause 22. * For the 7111 GMAC, we must set the bit 0 in the MII address register while * accessing the PHY registers. * Fortunately, it seems this has no drawback for the 7109 MAC. */ -static int stmmac_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg) +static int stmmac_c22_read(struct mii_bus *bus, int phyaddr, int phyreg) { struct net_device *ndev = bus->priv; struct stmmac_priv *priv = netdev_priv(ndev); @@ -194,15 +194,15 @@ static int stmmac_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg) } /** - * stmmac_mdio_write + * stmmac_c22_write * @bus: points to the mii_bus structure - * @phyaddr: MII addr - * @phyreg: MII reg - * @phydata: phy data - * Description: it writes the data into the MII register from within the device. + * @phyaddr: clause-22 phy address + * @phyreg: clause-22 phy register + * @phydata: clause-22 phy data + * Description: it writes the data into the MII register follow clause 22. */ -static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg, - u16 phydata) +static int stmmac_c22_write(struct mii_bus *bus, int phyaddr, int phyreg, + u16 phydata) { struct net_device *ndev = bus->priv; struct stmmac_priv *priv = netdev_priv(ndev); @@ -237,6 +237,149 @@ static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg, } /** + * stmmac_c45_read + * @bus: points to the mii_bus structure + * @phyaddr: clause-45 phy address + * @devad: clause-45 device address + * @prtad: clause-45 register address + * @phydata: phy data + * Description: it reads the data from the MII register follow clause 45. + */ +static int stmmac_c45_read(struct mii_bus *bus, int phyaddr, + int devad, int prtad) +{ + struct net_device *ndev = bus->priv; + struct stmmac_priv *priv = netdev_priv(ndev); + unsigned int mii_address = priv->hw->mii.addr; + unsigned int mii_data = priv->hw->mii.data; + u32 v, value; + int data; + + if (readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY), + 100, 10000)) + return -EBUSY; + + value = 0; + value |= (prtad << priv->hw->mii.cl45_reg_shift) + & priv->hw->mii.cl45_reg_mask; + writel(value, priv->ioaddr + mii_data); + + /* delay 2ms to avoid error value of get_phy_c45_devs_in_pkg */ + mdelay(2); + + value = MII_BUSY; + value |= (phyaddr << priv->hw->mii.addr_shift) + & priv->hw->mii.addr_mask; + value |= (devad << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask; + value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift) + & priv->hw->mii.clk_csr_mask; + if (priv->plat->has_gmac4) { + value |= MII_GMAC4_READ; + value |= priv->hw->mii.cl45_en; + } + writel(value, priv->ioaddr + mii_address); + + if (readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY), + 100, 10000)) + return -EBUSY; + + /* Read the data from the MII data register */ + data = (int)(readl(priv->ioaddr + mii_data) & 0xffff); + + return data; +} + +/** + * stmmac_c45_write + * @bus: points to the mii_bus structure + * @phyaddr: clause-45 phy address + * @devad: clause-45 device address + * @prtad: clause-45 register address + * @phydata: phy data + * Description: it writes the data into the MII register follow clause 45. + */ +static int stmmac_c45_write(struct mii_bus *bus, int phyaddr, int devad, + int prtad, u16 phydata) +{ + struct net_device *ndev = bus->priv; + struct stmmac_priv *priv = netdev_priv(ndev); + unsigned int mii_address = priv->hw->mii.addr; + unsigned int mii_data = priv->hw->mii.data; + u32 v, value; + + /* Wait until any existing MII operation is complete */ + if (readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY), + 100, 10000)) + return -EBUSY; + + value = phydata; + value |= (prtad << priv->hw->mii.cl45_reg_shift) & + priv->hw->mii.cl45_reg_mask; + writel(value, priv->ioaddr + mii_data); + + mdelay(2); + + value = MII_BUSY; + value |= (phyaddr << priv->hw->mii.addr_shift) & + priv->hw->mii.addr_mask; + value |= (devad << priv->hw->mii.reg_shift) & priv->hw->mii.reg_mask; + value |= (priv->clk_csr << priv->hw->mii.clk_csr_shift) & + priv->hw->mii.clk_csr_mask; + + if (priv->plat->has_gmac4) { + value |= MII_GMAC4_WRITE; + value |= priv->hw->mii.cl45_en; + } + writel(value, priv->ioaddr + mii_address); + + /* Wait until any existing MII operation is complete */ + return readl_poll_timeout(priv->ioaddr + mii_address, v, !(v & MII_BUSY), + 100, 10000); +} + +/** + * stmmac_mdio_read + * @bus: points to the mii_bus structure + * @phyaddr: MII addr + * @phyreg: MII reg + * Description: it reads data from the MII register from within the phy device. + */ +static int stmmac_mdio_read(struct mii_bus *bus, int phyaddr, int phyreg) +{ + if (phyreg & MII_ADDR_C45) { + int devad, prtad; + + devad = (phyreg >> 16) & 0x1f; + prtad = phyreg & 0xffff; + return stmmac_c45_read(bus, phyaddr, devad, prtad); + } else { + return stmmac_c22_read(bus, phyaddr, phyreg); + } +} + +/** + * stmmac_mdio_write + * @bus: points to the mii_bus structure + * @phyaddr: MII addr + * @phyreg: MII reg + * @phydata: phy data + * Description: it writes the data into the MII register from within the device. + */ +static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg, + u16 phydata) +{ + if (phyreg & MII_ADDR_C45) { + int devad, prtad; + + devad = (phyreg >> 16) & 0x1f; + prtad = phyreg & 0xffff; + return stmmac_c45_write(bus, phyaddr, devad, prtad, phydata); + } else { + return stmmac_c22_write(bus, phyaddr, phyreg, phydata); + } +} + +/** * stmmac_mdio_reset * @bus: points to the mii_bus structure * Description: reset the MII bus